Eyepiece Sky-Watcher Zoom 7-21mm 1.25″

Sky-Watcher 7-21mm 1,25″ Zoom Eyepiece

One eyepiece instead of a full set - that is the main advantage of a zoom design. The Sky-Watcher Zoom 7-21mm eyepiece covers focal lengths from 7 to 21 mm and lets you change magnification smoothly, without swapping eyepieces in the focuser. The field of view ranges from 38° at 21 mm to 52° at 7 mm, and the eye relief ranges from 15 to 18 mm - values that make extended observing sessions genuinely comfortable.

The lenses carry multi-layer MC anti-reflection coatings. These increase light transmission and reduce unwanted reflections. The result is a bright, sharp image with good colour contrast and fine detail. The eyepiece fits any telescope or spotting scope with a standard 1,25″ focuser.

A natural choice for terrestrial and nature observation

This eyepiece works especially well for terrestrial observation with spotting scopes - including refractors and Maksutov telescopes at f/7 and below. When watching landscapes or wildlife, you can move instantly from a wide view to a close-up detail simply by rotating the zoom ring. No need to pause your session, remove the eyepiece, and search for another - the change takes a single second.

Equally useful for astronomy

The same advantage applies at night. When the atmosphere is unstable and high magnification gives a poor image, simply dial down to a lower magnification - no reaching into a bag, no interruption. In practice, this one eyepiece replaces a set of four or five separate eyepieces, while delivering comparable image quality at a favourable price.

Key specifications

Who is this eyepiece for?

• Beginners who want versatile magnification without buying multiple eyepieces
• Nature and wildlife observers using spotting scopes or refractors
• Amateur astronomers who need quick magnification adjustments at the eyepiece
• Anyone looking for a compact, all-in-one solution that fits a 1,25″ focuser